Aiden McGeady had the chance of a Celtic return but turned it down.
The winger was offered another spell at Parkhead during Ronny Deila's time in charge of the club, but opted out due to the team and style of play at the time.
However, the Republic of Ireland international now regrets his decision, admitting he would have loved to play for Celtic again but knows the door is now closed for his in Glasgow's East End.
